Do Not Pass Sign Material:Engineer Grade Prismatic But we sell a lot

But we sell a lot more of them to towns and municipalities throughout the USA

or on downtown streets where speeds must be reduced

OSHA signs are made from

So if your streets are 60 mph and you need to put up new speed limit signs or replace older signs at their end of their lifespan

So when you are ordering speed limit 35 mph signs

Do Not Pass Sign Material:Engineer Grade Prismatic But we sell a lotSizes Available: 18x24, 24x30 We make all our signs from . 080 thick aluminum. Other companies use steel which rusts, plastic which cracks or warps, or a thinner gauge aluminum (. 060 or . 040) which bends or buckles. Material Details We use 3M reflective sheeting and 3M UV resistant inks. 3M offers the following on their sheeting: 3M 3400 Series Engineer Grade Prismatic (EGP): Rated for 5 7 year outdoor lifespan 3M 3930 Series High Intensity